Electrically evoked ABRs have shorter latencies and larger amplitudes than acoustic ABRs
Evidence
The amplitude of wave eV was larger than an acoustically evoked ABR amplitude, and latency which occurs approximately 3.6 ms after the onset of the stimulus is shorter because the electrical stimulus directly activates the neural pathway (Starr and Brackmann 1979 ; Pelizzone et al. 1989 ). — Dijk, Pim van, Physiology, Psychoacoustics and…, 1462
Categorization
Category: Causal Relationships
- DEFINE: Establishes that electrical stimulation bypasses cochlear transduction, directly activating the neural pathway, which explains the latency and amplitude differences.
- QUESTION: The BIC at ~4 ms vs wave eV at ~3.6 ms - what neural generators produce the BIC, and why does it lag the eV peak?
Related
- Electrically evoked brainstem responses are larger and faster than acoustic ones (similarity 0.93)
- Electrical cochlear stimulation produces faster, larger neural responses than acoustic stimulation (similarity 0.89)
- Cochlear region and stimulation intensity systematically change human eCAP component parameters (similarity 0.80)
- Acoustic and electric stimulus phase alignment is the key experimental variable (similarity 0.78)
- Phase timing between acoustic and electric stimulation was the core experimental variable (similarity 0.78)